Phase transition in (1-x)Ba(Y1/2Nb1/2) O3-xPbTiO3 solid solution with two morphotropic phase boundaries studied by Raman spectroscopy

被引：2
作者：
Chao, Xiaolian [1 ]
Yang, Zupei [1 ]
Wei, Lingling [1 ]
Ren, Hongmei [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Shaanxi, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 10期
基金：
美国国家科学基金会;
关键词：
Ceramics; Chemical synthesis; X-ray diffraction; Raman spectroscopy; MAGNESIUM-NIOBATE CERAMICS; FERROELECTRIC CERAMICS; RELAXOR FERROELECTRICS; DIELECTRIC-PROPERTIES; HIGH-PRESSURE; PEROVSKITE; SPECTRA; PBTIO3;
D O I：
10.1016/j.physb.2011.02.009
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
New (1-x)Ba(Y1/2Nb1/2)O-3-xPbTiO(3) ceramics have been synthesized by conventional mixed-oxide process. Two morphotropic phase boundaries (MPBs) corresponding to the rhombohedral-orthorhombic and orthorhombic-tetragonal phases are observed with increasing PT. The appearance of E(2TO(1)), E(2TO(2)), silent, R-l and E(4LO) modes indicates the presence of an orthorhombic symmetry. Remarkable variation with two MPBs appears in the whole frequency region, where the rhombohedral modes change into the tetragonal ones in the system. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1849 / 1852
页数：4
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